Additional information has been requested, and if made available, will be reported in a supplemental.
Method, result, and conclusion codes will be made available following engineering evaluation.
It was stated, "during the revision of a one-level reflex hybrid case, the top left screw was removed with a small metal shard coming off of the locking ring.
During the backing out of the upper right screw, the plate came over the top of the lower left screw.
With the plate being loose at the distal end, the second screw was difficult to get out.
After the plate with the third screw (lower right) still locked in was removed, the fourth screw (bottom left) was then removed from the vertebral body.